Thank you for showing the messy workbench. Most youtubers make everything look so clean that it seems like they just magically get everything right on the first try. But your bench looks more like my bench when I am working on a project, and that makes me feel like I am the same as you, capable of the same things you are. That make me feel good. It is empowering.
Have you considered adding a drop of manual dish-washing fluid? It may help lubricating the tumbling rocks, and facilitate cleaning of the bowls afterwards. You may want to compare concentrated fluid with non-concentrated; the former may make way too much foam.
Excellent and very clever design! The idea of using two springs to get the “throwing” motion was brilliant! I’d think that the barrel would tend to wear, whether SLA or FDM - but a stiff TPU would probably last practically forever, it’s extremely tough stuff. It seems to work perfectly fine as it is, but if you wanted a longer stroke on the vibration, a solenoid might do the trick: Since the core of the solenoid passes through the coil, it can exert force over a greater range of motion. - But then it would take a pretty big solenoid to exert as much force as the electromagnet does, so close to the magnetic metal part. (Also a genius idea to have the magnetic metal part 3D printed.) I had rotary tumblers as a kid (still have one of them in the basement :-) and always lusted after the vibratory ones because they worked so much faster. They were waaay too expensive though, being designed for industrial use. This one isn’t super-fast, but it’s a very clean, simple design that anyone could make (maybe just with a steel plate instead of the fancy 3D printed part.) (A note about how long it takes to round off the stones: Vibratory tumblers are faster than rotary ones because the vibration makes the rocks knock against each other with more force and more often vs just sliding over each other. A larger tumbler will also work faster than a small one because the greater weight of stones increases the forces between them.)
Hi, I also think that a different magnet would be better. However, I really wanted to do it with a cheap, standard pot magnet. I tested for a long time and printed a lot of parts until I found the trick. I can imagine that larger cups work better. My motivation to build a vibrating beaker was the price of commercially available beakers. These are extremely expensive and difficult to get in Europe. I can't remember exactly how long it took. But the machine ran continuously for about a month. However, you should check it 1-2 times a day as the sludge makes everything very viscous. But you can adjust the machine quite well with the potentiometers.
Please can you include details of time required to tumble to given stones and how much power the unit requires to function. Can you make it work on a solar panel for example? Also, how does the build price compare to the larger industrial versions?
Hi, I have not measured the power. However, I estimate between 10-20W. The solenoid draws ~0.5A at 24V. Theoretically it could work with enough sunlight and battery.
The black SLA container was printed with Tough Resin. I mainly used this one. I haven't noticed much wear yet. The orange FDM printed container is made of PLA. It started to leak after 2-3 weeks. I haven't been able to test the transparent one yet as I only used it for the final polishing step.
I used 5 sanding and polishing stages with silicon carbide. K80, K220, K500, K800 and finally aluminum oxide. The K80 ran for about 3 weeks. The others a lot shorter. In total, it must have been about 1.5-2 months.
Hello, unfortunately I can't print out the parts for you. However, there are very good online providers who can do this. I had the container printed here: jlc3dp.com/?from=Fraens
Unfortunately I can't say whether it makes a better shine due to the lack of a rotary tumbler. However, it works a little faster due to the many vibrations. If you ask around among the professionals, vibration tumblers are very popular for the polishing steps. I therefore assume that the shine will be better.
@@FraensEngineering - Did you see some of the comparison videos while you were working on this? This one seems quite useful. Comparing and Reviewing Vibratory Rock Tumblers th-cam.com/video/5gwiirt0lcs/w-d-xo.html
Thank you for showing the messy workbench. Most youtubers make everything look so clean that it seems like they just magically get everything right on the first try. But your bench looks more like my bench when I am working on a project, and that makes me feel like I am the same as you, capable of the same things you are. That make me feel good. It is empowering.
Yes, it is a challenge to keep the workbench for video clips clean ;-)
Do you also build machines? I would be interested.
@@FraensEngineering I try but they do not usually work. I need to scale up some and upgrade my space before I can take on biggee machines.
Have you considered adding a drop of manual dish-washing fluid? It may help lubricating the tumbling rocks, and facilitate cleaning of the bowls afterwards. You may want to compare concentrated fluid with non-concentrated; the former may make way too much foam.
Yes, I have used dishwashing liquid. However, it foams a lot. That's why I switched to water with washing powder.
Excellent and very clever design! The idea of using two springs to get the “throwing” motion was brilliant!
I’d think that the barrel would tend to wear, whether SLA or FDM - but a stiff TPU would probably last practically forever, it’s extremely tough stuff.
It seems to work perfectly fine as it is, but if you wanted a longer stroke on the vibration, a solenoid might do the trick: Since the core of the solenoid passes through the coil, it can exert force over a greater range of motion. - But then it would take a pretty big solenoid to exert as much force as the electromagnet does, so close to the magnetic metal part. (Also a genius idea to have the magnetic metal part 3D printed.)
I had rotary tumblers as a kid (still have one of them in the basement :-) and always lusted after the vibratory ones because they worked so much faster. They were waaay too expensive though, being designed for industrial use. This one isn’t super-fast, but it’s a very clean, simple design that anyone could make (maybe just with a steel plate instead of the fancy 3D printed part.)
(A note about how long it takes to round off the stones: Vibratory tumblers are faster than rotary ones because the vibration makes the rocks knock against each other with more force and more often vs just sliding over each other. A larger tumbler will also work faster than a small one because the greater weight of stones increases the forces between them.)
Hi, I also think that a different magnet would be better. However, I really wanted to do it with a cheap, standard pot magnet. I tested for a long time and printed a lot of parts until I found the trick. I can imagine that larger cups work better. My motivation to build a vibrating beaker was the price of commercially available beakers. These are extremely expensive and difficult to get in Europe. I can't remember exactly how long it took. But the machine ran continuously for about a month. However, you should check it 1-2 times a day as the sludge makes everything very viscous. But you can adjust the machine quite well with the potentiometers.
Wow very very cool!❤ what a rewarding machine, hats off again sir
Please can you include details of time required to tumble to given stones and how much power the unit requires to function. Can you make it work on a solar panel for example?
Also, how does the build price compare to the larger industrial versions?
Hi, I have not measured the power. However, I estimate between 10-20W. The solenoid draws ~0.5A at 24V. Theoretically it could work with enough sunlight and battery.
How's the wear on the plastic containers?
The black SLA container was printed with Tough Resin. I mainly used this one. I haven't noticed much wear yet. The orange FDM printed container is made of PLA. It started to leak after 2-3 weeks. I haven't been able to test the transparent one yet as I only used it for the final polishing step.
Can this setup/magnet pulse at a frequency of 3 KHZ. or what is the highest frequency you can get out of this magnet?
The machine worked best at around 30Hz. At higher frequencies, the rotation was stopped by too little stroke.
Wow man ! This is a good project
Perfekt 👌
Very cool build. How long do you let it run for?
I used 5 sanding and polishing stages with silicon carbide. K80, K220, K500, K800 and finally aluminum oxide. The K80 ran for about 3 weeks. The others a lot shorter. In total, it must have been about 1.5-2 months.
How much would one of these cost to get printed/where would I go to get someone to print this for me?
Hello, unfortunately I can't print out the parts for you. However, there are very good online providers who can do this. I had the container printed here: jlc3dp.com/?from=Fraens
Cool! Does the vibration bring rocks to a better level of shine than a tumbler can? Or take less time?
Unfortunately I can't say whether it makes a better shine due to the lack of a rotary tumbler. However, it works a little faster due to the many vibrations. If you ask around among the professionals, vibration tumblers are very popular for the polishing steps. I therefore assume that the shine will be better.
@@FraensEngineering Cool! Didn't know that, I'd only seen the cheap tumbling ones.
@@FraensEngineering - Did you see some of the comparison videos while you were working on this?
This one seems quite useful.
Comparing and Reviewing Vibratory Rock Tumblers
th-cam.com/video/5gwiirt0lcs/w-d-xo.html
Yes, I know that video.
@@FraensEngineering - Where would your design be in comparison to those four examples, in terms of cost and efficiency?
🔝🔝🔝🔝
NİCE